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Ontario Line - Rolling Stock, Systems, Operations and Maintenance

Project Type:
DBFOM – Design Build Finance Operate Maintain
Infrastructure Type:
Contract Value:
$9 Billion

About the Project

The Rolling Stock, Systems, Operations and Maintenance (RSSOM) project is one of many contracts to deliver the Ontario Line, a 15.6-kilometre stand-alone rapid transit line that will connect the Ontario Science Centre to Exhibition/Ontario Place.


  • Request for Qualifications
    Jun 02, 2020
  • Short-list Bidders Selected
    Dec 14, 2020
  • Request for Proposals
    Dec 14, 2020
  • Winning Bidder Selected
    Nov 17, 2022
  • Construction Begins
    Nov 17, 2022
  • Construction Ends

Latest News


The RSSOM scope of work includes:

  • A design-build-finance-operate-maintain contract for the entire Ontario Line, for a 30-year term
  • Rolling Stock: design, supply, operate and maintain the vehicles (trains)
  • Systems: design, build, operate and maintain all track, communications (e.g. network, Wi-Fi, CCTV, passenger information) and train control systems for the Ontario Line
  • Design, build, operate and maintain the Operations, Maintenance and Storage Facility (where the vehicles are stored; the Operations Control Centre (where staff control train operations and are connected to TTC and GO Transit systems) and Backup Operations Control Centre
  • Working collaboratively with TTC in accordance with future operations and maintenance agreements
  • Integrating fare equipment with the PRESTO system

Project Benefits

  • Faster, more frequent and reliable access to rapid transit with more than 227,500 people will live within a 10-minute walk of an Ontario Line station
  • Improve the quality of life for commuters by reducing daily travel time
  • Reduce crowding on the existing Line 1 (Yonge-University) subway
  • Up to 57,000 more jobs accessible by transit (in 45 minutes or less) for Toronto residents
  • Economic and community growth along the future transit line and thousands of job opportunities annually during construction
  • Reduction in traffic congestion, greenhouse gases and fuel consumption by providing an alternative transportation option

Demonstrating Value

  • The project is being delivered using a Design-Build-Finance-Operate-Maintain (DBFOM) model. Key benefits of a DBFOM model include significant risk transfer to the private sector over the life of the project agreement (that includes the 30 year maintenance term), greater cost and schedule certainty, greater potential for design and construction efficiencies and innovation as well as integration of long-term maintenance and operations.
  • Based on precedent experience, a DBFOM procurement model typically has delivered a value for money savings in the range of 15% to 22% compared to undertaking the same projects using traditional delivery models.

Learn more about IO’s delivery models and the associated features.

Terms of Use

These project documents are being made available on this website for informational purposes only. Neither Infrastructure Ontario nor Metrolinx makes any representation or warranty regarding the accuracy or completeness of the content or form of these documents. Infrastructure Ontario and Metrolinx, in their sole and absolute discretion, may choose to make available on this website amendments, revisions, modifications or replacements to these documents. These documents remain open for further revision, modification, replacement or cancellation by Infrastructure Ontario and Metrolinx at any time and in no event shall either Infrastructure Ontario or Metrolinx be responsible or liable, directly or indirectly, for any damage or loss caused or alleged to be caused by or in connection with the use of or reliance on the content of these documents.